Ralph Smith <rsm...@10kinfo.com> writes:
> <tt>Yeah your right Alban, that looks bad, but it was an artifact of
> 'try-this, try-this, no, try-this'.<br>
> <br>
> The table is empty, and unfortunately remains that way; nothing gets
> inserted.<br>
> I tried other variations, however FOUND just isn't behaving as I would
> think.<br>
(Please avoid html-encoded email.)
The original mail looked like you were trying to do
perform count(*) from something where something;
if found then ...
This will in fact *always* set FOUND, because the query always yields
exactly one row: that's the nature of aggregate functions. FOUND
doesn't respond to whether the result of count(*) was zero or nonzero,
but just to the fact that it did deliver a result row.
You probably wanted something like
perform 1 from something where something;
if found then ...
which will set FOUND depending on whether there are any rows matching
the where-clause. Or you could avoid FOUND altogether:
if exists(select 1 from something where something) then ...
regards, tom lane
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